/**
 * Created by Nieyu on 2016/11/29.
 */
function sAlert(str){
    var msgw,msgh,bordercolor;
    msgw=400;//提示窗口的宽度
    msgh=100;//提示窗口的高度
    bordercolor="#336699";//提示窗口的边框颜色
    titlecolor="#99CCFF";//提示窗口的标题颜色

    var sWidth,sHeight;
    sWidth=document.body.offsetWidth;
    sHeight=document.body.offsetHeight;


    var bgObj=document.createElement("div");
    bgObj.setAttribute('id','bgDiv');
    bgObj.style.position="absolute";
    bgObj.style.top="0";
    bgObj.style.background="#ffffff";
    bgObj.style.filter="progid:DXImageTransform.Microsoft.Alpha(style=3,opacity=25,finishOpacity=75";
    bgObj.style.opacity="0.6";
    bgObj.style.left="0";
    bgObj.style.width=sWidth-80 + "px";
    bgObj.style.height=sHeight + "px";
    document.body.appendChild(bgObj);
    var msgObj=document.createElement("div")
    msgObj.setAttribute("id","msgDiv");
    msgObj.setAttribute("align","center");
    msgObj.style.position="absolute";
    msgObj.style.background="white";
    msgObj.style.font="12px/1.6em Verdana, Geneva, Arial, Helvetica, sans-serif";
    msgObj.style.border="1px solid " + bordercolor;
    msgObj.style.width=msgw + "px";
    msgObj.style.height=msgh + "px";
    msgObj.style.top=20 + "px";
    msgObj.style.left=(sWidth-msgw)/2 + "px";
    var title=document.createElement("h4");
    title.setAttribute("id","msgTitle");
    title.setAttribute("align","right");
    title.style.margin="0";
    title.style.padding="3px";
    title.style.background=bordercolor;
    title.style.filter="progid:DXImageTransform.Microsoft.Alpha(startX=20, startY=20, finishX=100, finishY=100,style=1,opacity=75,finishOpacity=100);";
    title.style.opacity="0.75";
    title.style.border="1px solid " + bordercolor;
    title.style.height="18px";
    title.style.font="12px Verdana, Geneva, Arial, Helvetica, sans-serif";
    title.style.color="white";
    title.style.cursor="pointer";
    title.innerHTML="关闭";
    title.onclick=function(){
        document.body.removeChild(bgObj);
        document.getElementById("msgDiv").removeChild(title);
        document.body.removeChild(msgObj);
    }
    document.body.appendChild(msgObj);
    document.getElementById("msgDiv").appendChild(title);
    var txt=document.createElement("p");
    txt.style.margin="1em 0"
    txt.setAttribute("id","msgTxt");
    txt.innerHTML=str;
    document.getElementById("msgDiv").appendChild(txt);
}
